Topic summary
Kernel mode debugger
Extracted from the Wikipedia article SoftICE.
SoftICE is a kernel modedebugger for DOS and Windows up to Windows XP. It is designed to run underneath Windows, so that the operating system is unaware of its presence. Unlike an application debugger, SoftICE is capable of suspending all operations in Windows when instructed. Due to its low-level capabilities, SoftICE is also popular as a software cracking tool.